The protagonist of Happy Mining decided to earn his fortune by mining and selling minerals. To do this, he arrives at Sunny Island and receives his first pickaxe. By handing over more and more stones, the character expands his farm and automates it. In general, he does everything to get more and more coins and work less and less. The game begins with the player being able to choose the gender and appearance of their character. This customization does not affect the gameplay in any way. Immediately after creation, the hero in Happy Mining finds himself on an island green with grass and growing trees. But the character is not interested in wood, but in the minerals that come to the surface.